28552220

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{3391}}^1$

素因数の和:3821

約数の個数: 24

約数和(自身を含む): 60119808

約数和(自身を除く): 31567588

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 3391, 4210, 6782, 8420, 13564, 16955, 33910, 67820, 1427611, 2855222, 5710444, 7138055, 14276110, 28552220]

約数ペア:

[(1, 28552220), (2, 14276110), (4, 7138055), (5, 5710444), (10, 2855222), (20, 1427611), (421, 67820), (842, 33910), (1684, 16955), (2105, 13564), (3391, 8420), (4210, 6782)]